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<meta name="description" content="启动原理 &amp;emsp;&amp;emsp;首先，我们需要了解对于redis是如何在spring中进行注入的，在springboot启动时, 会加载 MEAT-INF下的spring.factories文件将常用的类注入到spring的beanfactory中，其中就包括redis ，下面是一段该文件的内容，其中的org.springframework.boot.autoconfigure.EnableAu">
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          <h1 class="post-title" itemprop="name headline">springboot下redis的使用</h1>
        

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        <h2 id="启动原理"><a href="#启动原理" class="headerlink" title="启动原理"></a>启动原理</h2><blockquote>
<p>&emsp;&emsp;首先，我们需要了解对于redis是如何在spring中进行注入的，在springboot启动时, 会加载 MEAT-INF下的spring.factories文件将常用的类注入到spring的beanfactory中，其中就包括redis ，下面是一段该文件的内容，其中的org.springframework.boot.autoconfigure.EnableAutoConfiguration就是关键。</p>
</blockquote>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line">...</span><br><span class="line">org.springframework.boot.autoconfigure.EnableAutoConfiguration=\</span><br><span class="line">...</span><br><span class="line">org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration,\</span><br><span class="line">org.springframework.boot.autoconfigure.data.redis.RedisReactiveAutoConfiguration,\</span><br><span class="line">org.springframework.boot.autoconfigure.data.redis.RedisRepositoriesAutoConfiguration,\</span><br><span class="line">...</span><br></pre></td></tr></table></figure>

<blockquote>
<p>RedisAutoConfiguration 就是redis自动注入所用的类。该类中将redisTemplate 注入到spring中以供我们使用 ，同时可以通过RedisProperties找到redis在springboot中可以配置的参数有哪些。可以看到 无论是redisTemplate 还是stringRedisTemplate 都需要一个RedisConnectionFactory 而连接工程则是通过@Import({ LettuceConnectionConfiguration.class, JedisConnectionConfiguration.class }) 这个注解 导入的类主动注入redisConnectionFactory的获取的。 ok </p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@Configuration</span>(proxyBeanMethods = <span class="keyword">false</span>)</span><br><span class="line"><span class="meta">@ConditionalOnClass</span>(RedisOperations.class)</span><br><span class="line"><span class="meta">@EnableConfigurationProperties</span>(RedisProperties.class)</span><br><span class="line"><span class="meta">@Import</span>(&#123; LettuceConnectionConfiguration.class, JedisConnectionConfiguration.class &#125;)</span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">RedisAutoConfiguration</span> </span>&#123;</span><br><span class="line"></span><br><span class="line">	<span class="meta">@Bean</span></span><br><span class="line">	<span class="meta">@ConditionalOnMissingBean</span>(name = <span class="string">"redisTemplate"</span>)</span><br><span class="line">	<span class="function"><span class="keyword">public</span> RedisTemplate&lt;Object, Object&gt; <span class="title">redisTemplate</span><span class="params">(RedisConnectionFactory redisConnectionFactory)</span></span></span><br><span class="line"><span class="function">			<span class="keyword">throws</span> UnknownHostException </span>&#123;</span><br><span class="line">		RedisTemplate&lt;Object, Object&gt; template = <span class="keyword">new</span> RedisTemplate&lt;&gt;();</span><br><span class="line">		template.setConnectionFactory(redisConnectionFactory);</span><br><span class="line">		<span class="keyword">return</span> template;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="meta">@Bean</span></span><br><span class="line">	<span class="meta">@ConditionalOnMissingBean</span></span><br><span class="line">	<span class="function"><span class="keyword">public</span> StringRedisTemplate <span class="title">stringRedisTemplate</span><span class="params">(RedisConnectionFactory redisConnectionFactory)</span></span></span><br><span class="line"><span class="function">			<span class="keyword">throws</span> UnknownHostException </span>&#123;</span><br><span class="line">		StringRedisTemplate template = <span class="keyword">new</span> StringRedisTemplate();</span><br><span class="line">		template.setConnectionFactory(redisConnectionFactory);</span><br><span class="line">		<span class="keyword">return</span> template;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@Bean</span></span><br><span class="line">	<span class="meta">@ConditionalOnMissingBean</span>(RedisConnectionFactory.class)</span><br><span class="line">	<span class="function"><span class="keyword">public</span> JedisConnectionFactory <span class="title">redisConnectionFactory</span><span class="params">()</span> <span class="keyword">throws</span> UnknownHostException </span>&#123;</span><br><span class="line">		<span class="keyword">return</span> createJedisConnectionFactory();</span><br><span class="line">	&#125;</span><br><span class="line"></span><br><span class="line">	<span class="function"><span class="keyword">private</span> JedisConnectionFactory <span class="title">createJedisConnectionFactory</span><span class="params">()</span> </span>&#123;</span><br><span class="line">		JedisClientConfiguration clientConfiguration = getJedisClientConfiguration();</span><br><span class="line">		<span class="keyword">if</span> (getSentinelConfig() != <span class="keyword">null</span>) &#123;</span><br><span class="line">			<span class="keyword">return</span> <span class="keyword">new</span> JedisConnectionFactory(getSentinelConfig(), clientConfiguration);</span><br><span class="line">		&#125;</span><br><span class="line">		<span class="keyword">if</span> (getClusterConfiguration() != <span class="keyword">null</span>) &#123;</span><br><span class="line">			<span class="keyword">return</span> <span class="keyword">new</span> JedisConnectionFactory(getClusterConfiguration(),</span><br><span class="line">					clientConfiguration);</span><br><span class="line">		&#125;</span><br><span class="line">		<span class="keyword">return</span> <span class="keyword">new</span> JedisConnectionFactory(getStandaloneConfig(), clientConfiguration);</span><br><span class="line">	&#125;</span><br></pre></td></tr></table></figure>

<hr>
<h2 id="使用-redisTemplate"><a href="#使用-redisTemplate" class="headerlink" title="使用 -redisTemplate"></a>使用 -redisTemplate</h2><h3 id="redis-字符串类型的应用"><a href="#redis-字符串类型的应用" class="headerlink" title="redis 字符串类型的应用"></a>redis 字符串类型的应用</h3><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="meta">@Autowired</span></span><br><span class="line">RedisTemplate redisTemplate;</span><br><span class="line"></span><br><span class="line"><span class="meta">@RequestMapping</span>(value = <span class="string">"/getkey"</span>,method = RequestMethod.GET)</span><br><span class="line"><span class="meta">@ResponseBody</span></span><br><span class="line"><span class="function"><span class="keyword">public</span> String <span class="title">getkey</span><span class="params">(@RequestParam String key)</span></span>&#123;</span><br><span class="line">    String val=(String)redisTemplate.boundValueOps(key).get();</span><br><span class="line">    <span class="keyword">return</span> val;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="meta">@RequestMapping</span>(value = <span class="string">"/setkey/&#123;v&#125;"</span>,method = RequestMethod.POST)</span><br><span class="line"><span class="meta">@ResponseBody</span></span><br><span class="line"><span class="function"><span class="keyword">public</span> String <span class="title">setkey</span><span class="params">(@PathVariable String v)</span></span>&#123;</span><br><span class="line">    redisTemplate.boundValueOps(<span class="string">"dd"</span>).set(v);</span><br><span class="line">    <span class="keyword">return</span> <span class="string">"ok"</span>;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="comment">//设定key val 值 及过期时间 使用lua脚本保证原子性</span></span><br><span class="line"><span class="keyword">private</span> <span class="keyword">static</span> <span class="keyword">final</span> String lock_lua= <span class="string">"if (redis.call('SETNX' ,KEYS[1],ARGV[1]) ==1 ) then if (redis.call('EXPIRE' ,KEYS[1],ARGV[2])==1 ) then return 1 end end  return 0"</span>;</span><br><span class="line"><span class="comment">// 获取 key 对应的值 判断是否是自己设定的 是就删除</span></span><br><span class="line"><span class="keyword">private</span> <span class="keyword">static</span> <span class="keyword">final</span> String unlock_lua=<span class="string">"local getVal = redis.call('get', KEYS[1]) if getVal == false then return 1 end if getVal ~= ARGV[1] then return 0 end return redis.call('del', KEYS[1])"</span>;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="keyword">private</span> <span class="keyword">static</span> <span class="keyword">final</span> String rdlock=<span class="string">"redis_lock"</span>;</span><br><span class="line"><span class="comment">//redis 分布式锁 模拟操作redis共享数据</span></span><br><span class="line"><span class="meta">@RequestMapping</span>(value = <span class="string">"/rdlock/"</span>,method = RequestMethod.POST)</span><br><span class="line"><span class="meta">@ResponseBody</span></span><br><span class="line"><span class="function"><span class="keyword">public</span> String <span class="title">rdlock</span><span class="params">()</span> <span class="keyword">throws</span> InterruptedException </span>&#123;</span><br><span class="line">    <span class="comment">//模拟被操做的共享数据</span></span><br><span class="line">    redisTemplate.boundValueOps(<span class="string">"count"</span>).set(<span class="number">1</span>);</span><br><span class="line">    <span class="comment">//向下的计数器 countDown() 向下计数 await()阻塞线程</span></span><br><span class="line">    CountDownLatch countDownLatch = <span class="keyword">new</span> CountDownLatch(<span class="number">10</span>);</span><br><span class="line">    ThreadPoolExecutor threadPool =  <span class="keyword">new</span> ThreadPoolExecutor(<span class="number">10</span>,<span class="number">10</span>,<span class="number">10</span>,TimeUnit.SECONDS,<span class="keyword">new</span> LinkedBlockingDeque&lt;&gt;());</span><br><span class="line">    <span class="keyword">long</span> time= <span class="number">50L</span>;</span><br><span class="line">    <span class="keyword">for</span>(<span class="keyword">int</span> i=<span class="number">0</span> ;i&lt;<span class="number">10</span> ;i++)&#123;</span><br><span class="line">        <span class="comment">//模拟多个请求操作</span></span><br><span class="line">        threadPool.execute(()-&gt;&#123;</span><br><span class="line"></span><br><span class="line">            String val = RandomStringUtils.randomAlphanumeric(<span class="number">10</span>)+Thread.currentThread().getId();</span><br><span class="line">            <span class="comment">//加锁</span></span><br><span class="line">            <span class="keyword">int</span> count=<span class="number">0</span>;</span><br><span class="line">            <span class="keyword">while</span>(<span class="keyword">true</span>)&#123;</span><br><span class="line">                <span class="keyword">boolean</span> islock = (<span class="keyword">boolean</span>) redisTemplate.execute(<span class="keyword">new</span> DefaultRedisScript(lock_lua,Boolean.class), Arrays.asList(<span class="keyword">new</span> String[]&#123;rdlock&#125;),val,<span class="keyword">new</span> Integer(<span class="number">30</span>));</span><br><span class="line">                System.out.println(Thread.currentThread().getName()+<span class="string">"加锁:"</span>+islock);</span><br><span class="line">                <span class="comment">//加锁失败操作</span></span><br><span class="line">                <span class="keyword">if</span>(!islock)&#123;</span><br><span class="line">                    <span class="keyword">if</span>(count==<span class="number">50</span>)&#123;</span><br><span class="line">                        <span class="comment">//todo 50次都没获得锁 。。。 do something 扔MQ里？</span></span><br><span class="line">                    &#125;</span><br><span class="line">                    count+=<span class="number">1</span>;</span><br><span class="line">                    <span class="keyword">try</span> &#123;</span><br><span class="line">                        Thread.sleep(<span class="number">100</span>);</span><br><span class="line">                        <span class="keyword">continue</span>;</span><br><span class="line">                    &#125; <span class="keyword">catch</span> (InterruptedException e) &#123;</span><br><span class="line">                        e.printStackTrace();</span><br><span class="line">                    &#125;</span><br><span class="line">                &#125;</span><br><span class="line">                <span class="comment">//获得锁就跳出循环</span></span><br><span class="line">                <span class="keyword">break</span>;</span><br><span class="line">            &#125;</span><br><span class="line">            <span class="comment">//操作数据</span></span><br><span class="line">            redisTemplate.boundValueOps(<span class="string">"count"</span>).set((<span class="keyword">int</span>)redisTemplate.boundValueOps(<span class="string">"count"</span>).get()+<span class="number">1</span>);</span><br><span class="line">            <span class="comment">//解锁</span></span><br><span class="line">            <span class="keyword">boolean</span> isunlock = (<span class="keyword">boolean</span>) redisTemplate.execute(<span class="keyword">new</span> DefaultRedisScript(unlock_lua,Boolean.class), Arrays.asList(<span class="keyword">new</span> String[]&#123;rdlock&#125;),val);</span><br><span class="line">            System.out.println(Thread.currentThread().getName()+<span class="string">"解锁:"</span>+isunlock);</span><br><span class="line">            <span class="keyword">if</span>(isunlock)&#123;</span><br><span class="line">                countDownLatch.countDown();</span><br><span class="line">            &#125;</span><br><span class="line">            <span class="keyword">else</span>&#123;</span><br><span class="line">                <span class="comment">//todo 解锁失败 do something</span></span><br><span class="line">            &#125;</span><br><span class="line">        &#125;);</span><br><span class="line">    &#125;</span><br><span class="line">    countDownLatch.await();</span><br><span class="line">    <span class="keyword">return</span> String.valueOf(redisTemplate.boundValueOps(<span class="string">"count"</span>).get());</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<h3 id="redis-set-集合"><a href="#redis-set-集合" class="headerlink" title="redis set 集合"></a>redis set 集合</h3><blockquote>
<p>set 就像java的hashset似的使用一个value为空的map作为内部存储 多数情况下会使用他的 交 并 差 三种 例如 好友之间的共同关注内容 或者 推荐可能认识的好友 等等</p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="comment">//set 提供 交集、并集、差集 操作较为常见</span></span><br><span class="line">   <span class="meta">@RequestMapping</span>(value = <span class="string">"/setoption"</span>,method = RequestMethod.POST)</span><br><span class="line">   <span class="meta">@ResponseBody</span></span><br><span class="line">   <span class="function"><span class="keyword">public</span> Map <span class="title">setoption</span><span class="params">()</span></span>&#123;</span><br><span class="line"></span><br><span class="line">       Map map = <span class="keyword">new</span> HashMap();</span><br><span class="line">       String[] set1 =<span class="keyword">new</span> String[]&#123;<span class="string">"张三"</span>,<span class="string">"李四"</span>,<span class="string">"王五"</span>,<span class="string">"李白"</span>,<span class="string">"杜甫"</span>&#125;;</span><br><span class="line">       String[] set2 =<span class="keyword">new</span> String[]&#123;<span class="string">"张三"</span>,<span class="string">"李四"</span>,<span class="string">"李白"</span>,<span class="string">"杜甫"</span>,<span class="string">"孟浩然"</span>,<span class="string">"米开朗基罗"</span>&#125;;</span><br><span class="line">       <span class="comment">//准备测试数据</span></span><br><span class="line">       redisTemplate.opsForSet().add(<span class="string">"set1"</span>,set1);</span><br><span class="line">       redisTemplate.opsForSet().add(<span class="string">"set2"</span>,set2);</span><br><span class="line">       <span class="comment">//判断元素是否存在</span></span><br><span class="line">        <span class="keyword">boolean</span> isMember=  redisTemplate.opsForSet().isMember(<span class="string">"set1"</span>,<span class="string">"米开朗基罗"</span>);</span><br><span class="line">        map.put(<span class="string">"isMember"</span>,isMember);<span class="comment">//false 不存在</span></span><br><span class="line">       <span class="comment">//交集</span></span><br><span class="line">       Set intersect= redisTemplate.opsForSet().intersect(<span class="string">"set1"</span> ,Arrays.asList(<span class="string">"set2"</span>));</span><br><span class="line">       map.put(<span class="string">"intersect"</span>,intersect);<span class="comment">//返回set1 和其他set的相交部分</span></span><br><span class="line">       <span class="comment">//并集</span></span><br><span class="line">       Set union= redisTemplate.opsForSet().union(<span class="string">"set1"</span> ,Arrays.asList(<span class="string">"set2"</span>));</span><br><span class="line">       map.put(<span class="string">"union"</span>,union);<span class="comment">//返回set1 和其他set的相并集合</span></span><br><span class="line">       <span class="comment">//差集</span></span><br><span class="line">       Set diff= redisTemplate.opsForSet().difference(<span class="string">"set1"</span> ,Arrays.asList(<span class="string">"set2"</span>));</span><br><span class="line">       map.put(<span class="string">"diff"</span>,diff);<span class="comment">//返回set1 和其他set的差异</span></span><br><span class="line">       <span class="keyword">return</span> map;</span><br><span class="line">   &#125;</span><br></pre></td></tr></table></figure>

<h3 id="redis-zset-有序集合"><a href="#redis-zset-有序集合" class="headerlink" title="redis zset 有序集合"></a>redis zset 有序集合</h3><blockquote>
<p>zset 和set类似  只不过是使用score对set进行排序，同时也可用以 并集 交集的计算 会把 计算的结果存放在一个新的集合中以供使用。</p>
</blockquote>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//有序集合  通过score 进行排序</span></span><br><span class="line">    <span class="meta">@PostMapping</span>(<span class="string">"/zsetoption"</span>)</span><br><span class="line">    <span class="meta">@ResponseBody</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> Map <span class="title">zsetoption</span><span class="params">()</span></span>&#123;</span><br><span class="line">        Map map = <span class="keyword">new</span> HashMap();</span><br><span class="line">        Set&lt;ZSetOperations.TypedTuple&gt; sets= <span class="keyword">new</span> HashSet&lt;&gt;();</span><br><span class="line">        Set&lt;ZSetOperations.TypedTuple&gt; sets1= <span class="keyword">new</span> HashSet&lt;&gt;();</span><br><span class="line">        List&lt;DefaultTypedTuple&gt; list = <span class="keyword">new</span> ArrayList&lt;&gt;();</span><br><span class="line">        list.add(<span class="keyword">new</span> DefaultTypedTuple(<span class="string">"张三"</span>,<span class="number">10.00</span>));</span><br><span class="line">        list.add(<span class="keyword">new</span> DefaultTypedTuple(<span class="string">"李四"</span>,<span class="number">7.00</span>));</span><br><span class="line">        list.add(<span class="keyword">new</span> DefaultTypedTuple(<span class="string">"王五"</span>,<span class="number">11.00</span>));</span><br><span class="line">        list.add(<span class="keyword">new</span> DefaultTypedTuple(<span class="string">"李白"</span>,<span class="number">15.00</span>));</span><br><span class="line">        list.add(<span class="keyword">new</span> DefaultTypedTuple(<span class="string">"杜甫"</span>,<span class="number">3.00</span>));</span><br><span class="line">        list.add(<span class="keyword">new</span> DefaultTypedTuple(<span class="string">"孟浩然"</span>,<span class="number">2.00</span>));</span><br><span class="line">        list.add(<span class="keyword">new</span> DefaultTypedTuple(<span class="string">"米开朗基罗"</span>,<span class="number">1.00</span>));</span><br><span class="line">        sets.addAll(list);</span><br><span class="line">        <span class="comment">//准备测试数据</span></span><br><span class="line">        redisTemplate.opsForZSet().add(<span class="string">"zset1"</span>,sets);</span><br><span class="line">        list.remove(<span class="number">6</span>);</span><br><span class="line">        list.add(<span class="keyword">new</span> DefaultTypedTuple(<span class="string">"卡夫卡"</span>,<span class="number">9.00</span>));</span><br><span class="line">        sets.addAll(list);</span><br><span class="line">        redisTemplate.opsForZSet().add(<span class="string">"zset2"</span>,sets);</span><br><span class="line">        <span class="comment">// 获取 7条数据</span></span><br><span class="line">        <span class="comment">//start  从0开始</span></span><br><span class="line">        <span class="comment">//从小到大</span></span><br><span class="line">        Set range =  redisTemplate.opsForZSet().range(<span class="string">"zset1"</span>,<span class="number">1</span>,<span class="number">7</span>);</span><br><span class="line">        map.put(<span class="string">"range"</span>,range);</span><br><span class="line"></span><br><span class="line">        <span class="comment">//从大到小</span></span><br><span class="line">        Set reverseRange =  redisTemplate.opsForZSet().reverseRange(<span class="string">"zset1"</span>,<span class="number">1</span>,<span class="number">7</span>);</span><br><span class="line">        map.put(<span class="string">"reverseRange"</span>,reverseRange);</span><br><span class="line"></span><br><span class="line">        <span class="comment">//并集 zset3</span></span><br><span class="line">        redisTemplate.opsForZSet().unionAndStore(<span class="string">"zset1"</span>,Arrays.asList(<span class="string">"zset2"</span>),<span class="string">"zset3"</span>);</span><br><span class="line">        Set unionAndStore =redisTemplate.opsForZSet().range(<span class="string">"zset3"</span>,<span class="number">0</span>,<span class="number">10</span>);</span><br><span class="line">        map.put(<span class="string">"unionAndStore"</span>,unionAndStore);</span><br><span class="line">        <span class="comment">//交集 zset4</span></span><br><span class="line">        redisTemplate.opsForZSet().intersectAndStore(<span class="string">"zset1"</span>,Arrays.asList(<span class="string">"zset2"</span>),<span class="string">"zset4"</span>);</span><br><span class="line">        Set intersectAndStore =redisTemplate.opsForZSet().range(<span class="string">"zset4"</span>,<span class="number">0</span>,<span class="number">10</span>);</span><br><span class="line">        map.put(<span class="string">"intersectAndStore"</span>,intersectAndStore);</span><br><span class="line"></span><br><span class="line">        <span class="keyword">return</span> map;</span><br><span class="line">    &#125;</span><br></pre></td></tr></table></figure>

<hr>
<blockquote>
<p>除此之外还包括对地理位置的存储等功能 </p>
<ul>
<li>GEOADD Sicily 13.361389 38.115556 “Palermo” 15.087269 37.502669 “Catania”</li>
<li>GEOPOS Sicily Palermo Catania 不存在返回nil</li>
<li>GEODIST Sicily Palermo Catania km （计算两点距离【单位包括 m米  km千米 mi英里 ft 英尺】）</li>
</ul>
</blockquote>

      
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      $('.search-popup-overlay').click(onPopupClose);
      $('.popup').toggle();
      var $localSearchInput = $('#local-search-input');
      $localSearchInput.attr("autocapitalize", "none");
      $localSearchInput.attr("autocorrect", "off");
      $localSearchInput.focus();
    }

    // search function;
    var searchFunc = function(path, search_id, content_id) {
      'use strict';

      // start loading animation
      $("body")
        .append('<div class="search-popup-overlay local-search-pop-overlay">' +
          '<div id="search-loading-icon">' +
          '<i class="fa fa-spinner fa-pulse fa-5x fa-fw"></i>' +
          '</div>' +
          '</div>')
        .css('overflow', 'hidden');
      $("#search-loading-icon").css('margin', '20% auto 0 auto').css('text-align', 'center');

      $.ajax({
        url: path,
        dataType: isXml ? "xml" : "json",
        async: true,
        success: function(res) {
          // get the contents from search data
          isfetched = true;
          $('.popup').detach().appendTo('.header-inner');
          var datas = isXml ? $("entry", res).map(function() {
            return {
              title: $("title", this).text(),
              content: $("content",this).text(),
              url: $("url" , this).text()
            };
          }).get() : res;
          var input = document.getElementById(search_id);
          var resultContent = document.getElementById(content_id);
          var inputEventFunction = function() {
            var searchText = input.value.trim().toLowerCase();
            var keywords = searchText.split(/[\s\-]+/);
            if (keywords.length > 1) {
              keywords.push(searchText);
            }
            var resultItems = [];
            if (searchText.length > 0) {
              // perform local searching
              datas.forEach(function(data) {
                var isMatch = false;
                var hitCount = 0;
                var searchTextCount = 0;
                var title = data.title.trim();
                var titleInLowerCase = title.toLowerCase();
                var content = data.content.trim().replace(/<[^>]+>/g,"");
                var contentInLowerCase = content.toLowerCase();
                var articleUrl = decodeURIComponent(data.url);
                var indexOfTitle = [];
                var indexOfContent = [];
                // only match articles with not empty titles
                if(title != '') {
                  keywords.forEach(function(keyword) {
                    function getIndexByWord(word, text, caseSensitive) {
                      var wordLen = word.length;
                      if (wordLen === 0) {
                        return [];
                      }
                      var startPosition = 0, position = [], index = [];
                      if (!caseSensitive) {
                        text = text.toLowerCase();
                        word = word.toLowerCase();
                      }
                      while ((position = text.indexOf(word, startPosition)) > -1) {
                        index.push({position: position, word: word});
                        startPosition = position + wordLen;
                      }
                      return index;
                    }

                    indexOfTitle = indexOfTitle.concat(getIndexByWord(keyword, titleInLowerCase, false));
                    indexOfContent = indexOfContent.concat(getIndexByWord(keyword, contentInLowerCase, false));
                  });
                  if (indexOfTitle.length > 0 || indexOfContent.length > 0) {
                    isMatch = true;
                    hitCount = indexOfTitle.length + indexOfContent.length;
                  }
                }

                // show search results

                if (isMatch) {
                  // sort index by position of keyword

                  [indexOfTitle, indexOfContent].forEach(function (index) {
                    index.sort(function (itemLeft, itemRight) {
                      if (itemRight.position !== itemLeft.position) {
                        return itemRight.position - itemLeft.position;
                      } else {
                        return itemLeft.word.length - itemRight.word.length;
                      }
                    });
                  });

                  // merge hits into slices

                  function mergeIntoSlice(text, start, end, index) {
                    var item = index[index.length - 1];
                    var position = item.position;
                    var word = item.word;
                    var hits = [];
                    var searchTextCountInSlice = 0;
                    while (position + word.length <= end && index.length != 0) {
                      if (word === searchText) {
                        searchTextCountInSlice++;
                      }
                      hits.push({position: position, length: word.length});
                      var wordEnd = position + word.length;

                      // move to next position of hit

                      index.pop();
                      while (index.length != 0) {
                        item = index[index.length - 1];
                        position = item.position;
                        word = item.word;
                        if (wordEnd > position) {
                          index.pop();
                        } else {
                          break;
                        }
                      }
                    }
                    searchTextCount += searchTextCountInSlice;
                    return {
                      hits: hits,
                      start: start,
                      end: end,
                      searchTextCount: searchTextCountInSlice
                    };
                  }

                  var slicesOfTitle = [];
                  if (indexOfTitle.length != 0) {
                    slicesOfTitle.push(mergeIntoSlice(title, 0, title.length, indexOfTitle));
                  }

                  var slicesOfContent = [];
                  while (indexOfContent.length != 0) {
                    var item = indexOfContent[indexOfContent.length - 1];
                    var position = item.position;
                    var word = item.word;
                    // cut out 100 characters
                    var start = position - 20;
                    var end = position + 80;
                    if(start < 0){
                      start = 0;
                    }
                    if (end < position + word.length) {
                      end = position + word.length;
                    }
                    if(end > content.length){
                      end = content.length;
                    }
                    slicesOfContent.push(mergeIntoSlice(content, start, end, indexOfContent));
                  }

                  // sort slices in content by search text's count and hits' count

                  slicesOfContent.sort(function (sliceLeft, sliceRight) {
                    if (sliceLeft.searchTextCount !== sliceRight.searchTextCount) {
                      return sliceRight.searchTextCount - sliceLeft.searchTextCount;
                    } else if (sliceLeft.hits.length !== sliceRight.hits.length) {
                      return sliceRight.hits.length - sliceLeft.hits.length;
                    } else {
                      return sliceLeft.start - sliceRight.start;
                    }
                  });

                  // select top N slices in content

                  var upperBound = parseInt('1');
                  if (upperBound >= 0) {
                    slicesOfContent = slicesOfContent.slice(0, upperBound);
                  }

                  // highlight title and content

                  function highlightKeyword(text, slice) {
                    var result = '';
                    var prevEnd = slice.start;
                    slice.hits.forEach(function (hit) {
                      result += text.substring(prevEnd, hit.position);
                      var end = hit.position + hit.length;
                      result += '<b class="search-keyword">' + text.substring(hit.position, end) + '</b>';
                      prevEnd = end;
                    });
                    result += text.substring(prevEnd, slice.end);
                    return result;
                  }

                  var resultItem = '';

                  if (slicesOfTitle.length != 0) {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + highlightKeyword(title, slicesOfTitle[0]) + "</a>";
                  } else {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + title + "</a>";
                  }

                  slicesOfContent.forEach(function (slice) {
                    resultItem += "<a href='" + articleUrl + "'>" +
                      "<p class=\"search-result\">" + highlightKeyword(content, slice) +
                      "...</p>" + "</a>";
                  });

                  resultItem += "</li>";
                  resultItems.push({
                    item: resultItem,
                    searchTextCount: searchTextCount,
                    hitCount: hitCount,
                    id: resultItems.length
                  });
                }
              })
            };
            if (keywords.length === 1 && keywords[0] === "") {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-search fa-5x" /></div>'
            } else if (resultItems.length === 0) {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-frown-o fa-5x" /></div>'
            } else {
              resultItems.sort(function (resultLeft, resultRight) {
                if (resultLeft.searchTextCount !== resultRight.searchTextCount) {
                  return resultRight.searchTextCount - resultLeft.searchTextCount;
                } else if (resultLeft.hitCount !== resultRight.hitCount) {
                  return resultRight.hitCount - resultLeft.hitCount;
                } else {
                  return resultRight.id - resultLeft.id;
                }
              });
              var searchResultList = '<ul class=\"search-result-list\">';
              resultItems.forEach(function (result) {
                searchResultList += result.item;
              })
              searchResultList += "</ul>";
              resultContent.innerHTML = searchResultList;
            }
          }

          if ('auto' === 'auto') {
            input.addEventListener('input', inputEventFunction);
          } else {
            $('.search-icon').click(inputEventFunction);
            input.addEventListener('keypress', function (event) {
              if (event.keyCode === 13) {
                inputEventFunction();
              }
            });
          }

          // remove loading animation
          $(".local-search-pop-overlay").remove();
          $('body').css('overflow', '');

          proceedsearch();
        }
      });
    }

    // handle and trigger popup window;
    $('.popup-trigger').click(function(e) {
      e.stopPropagation();
      if (isfetched === false) {
        searchFunc(path, 'local-search-input', 'local-search-result');
      } else {
        proceedsearch();
      };
    });

    $('.popup-btn-close').click(onPopupClose);
    $('.popup').click(function(e){
      e.stopPropagation();
    });
    $(document).on('keyup', function (event) {
      var shouldDismissSearchPopup = event.which === 27 &&
        $('.search-popup').is(':visible');
      if (shouldDismissSearchPopup) {
        onPopupClose();
      }
    });
  </script>





  

  

  

  
  

  

  

  

</body>
</html>
